Specification of wall boundary conditions and transverse velocity profile conditions in finite element modeling

被引：0
|
作者：
Il Won Seo
Chang Geun Song
机构：
[1] Seoul National University,Department of Civil and Environmental Engineering
来源：
Journal of Hydrodynamics | 2010年 / 22卷
关键词：
wall boundary condition; transverse velocity boundary condition; slip condition; no slip condition; beta distribution;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Present work mainly focuses on the influence of wall boundary conditions and imposition of transverse velocity boundary conditions on the flow field of a bluff body. Uniform velocity over the nodestring is specified in slip condition mode. Three types of transverse velocity profile are adopted for the no slip situation; top hat is same as slip case except for no velocities at wall; parabola for the simple and typical approximation of transverse velocity shape in open channel flow; beta distribution for the general expansion. Assignment of top hat and parabola velocity profiles yields maximum velocity nearby the cylinder while uniform one has maximum magnitude at side walls. Maximum velocity of parabola input is about 44% higher than that of uniform assignment.
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页码：610 / 615
页数：5
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